<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>es6 by VUE</title>
  <style>
    :root {
      font-size: 15px;
    }


    body {
      font-family: 'Quicksand', sans-serif;
      margin: 0;
      min-height: 100vh;
      background-color: #e493d0;
      background-image:
        radial-gradient(closest-side, rgba(235, 105, 78, 1), rgba(235, 105, 78, 0)),
        radial-gradient(closest-side, rgba(243, 11, 164, 1), rgba(243, 11, 164, 0)),
        radial-gradient(closest-side, rgba(254, 234, 131, 1), rgba(254, 234, 131, 0)),
        radial-gradient(closest-side, rgba(170, 142, 245, 1), rgba(170, 142, 245, 0)),
        radial-gradient(closest-side, rgba(248, 192, 147, 1), rgba(248, 192, 147, 0));
      background-size:
        130vmax 130vmax,
        80vmax 80vmax,
        90vmax 90vmax,
        110vmax 110vmax,
        90vmax 90vmax;
      background-position:
        -80vmax -80vmax,
        60vmax -30vmax,
        10vmax 10vmax,
        -30vmax -10vmax,
        50vmax 50vmax;
      background-repeat: no-repeat;
      animation: 10s movement linear infinite;
    }

    body::after {
      content: '';
      display: block;
      /* position: fixed; */
      width: 100%;
      height: 100%;
      top: 0;
      left: 0;
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
    }


    #d1
    {
      background-image:url(images/grid_18px.png);  /* add the grid lines */		
	color:#333; 
	font-family:helvetica, arial, sans-serif;
	margin:0 40px 0;  	/*  large l & r margins create a crude column for this demo */
	padding-top:22px;
    }

    #d1 h3
    {
      font-size:18px; line-height:18px; margin-top:-2px; margin-bottom:2px;
    }

    #d1 p
    {
      font-family:verdana, sans-serif;
      font-size:13px; /* set the font size */
	line-height:18px; /* set line-height equal to grid distance */
	margin-bottom:18px;
    }



    span {
      position: relative;
      z-index: 10;
      display: flex;
      min-height: 100vh;
      width: 100%;
      justify-content: center;
      align-items: center;
      font-size: 5rem;
      color: transparent;
      text-shadow:
        0px 0px 1px rgba(255, 255, 255, .6),
        0px 4px 4px rgba(0, 0, 0, .05);
      letter-spacing: .2rem;
    }


    @keyframes loading {
      to {
        background-position-x: -20%;
      }
    }

    @keyframes movement {

      0%,
      100% {
        background-size:
          130vmax 130vmax,
          80vmax 80vmax,
          90vmax 90vmax,
          110vmax 110vmax,
          90vmax 90vmax;
        background-position:
          -80vmax -80vmax,
          60vmax -30vmax,
          10vmax 10vmax,
          -30vmax -10vmax,
          50vmax 50vmax;
      }

      25% {
        background-size:
          100vmax 100vmax,
          90vmax 90vmax,
          100vmax 100vmax,
          90vmax 90vmax,
          60vmax 60vmax;
        background-position:
          -60vmax -90vmax,
          50vmax -40vmax,
          0vmax -20vmax,
          -40vmax -20vmax,
          40vmax 60vmax;
      }

      50% {
        background-size:
          80vmax 80vmax,
          110vmax 110vmax,
          80vmax 80vmax,
          60vmax 60vmax,
          80vmax 80vmax;
        background-position:
          -50vmax -70vmax,
          40vmax -30vmax,
          10vmax 0vmax,
          20vmax 10vmax,
          30vmax 70vmax;
      }

      75% {
        background-size:
          90vmax 90vmax,
          90vmax 90vmax,
          100vmax 100vmax,
          90vmax 90vmax,
          70vmax 70vmax;
        background-position:
          -50vmax -40vmax,
          50vmax -30vmax,
          20vmax 0vmax,
          -10vmax 10vmax,
          40vmax 60vmax;
      }
    }



    ul {
      margin-bottom: 18px;
    }

    .card {
      width: 320px;
      background-color: #fff;
      border-radius: 6px;
      overflow: hidden;
      box-shadow: 0px 4px 6px rgba(0, 0, 0, .12);
    }

    .image {
      height: 200px;
    }

    .image img {
      display: block;
      width: 100%;
      height: inherit;
      object-fit: cover;
    }

    .content {
      padding: 2rem 1.8rem;
    }


    h1{
				color: #E5E5E5;
				font-size: 48px;
				text-shadow: #B22222 -1px -3px ,#00FFFF 3px 0px;
				
			}


    h4 {
      margin: 0 0 1rem;
      font-size: 1.5rem;
      line-height: 1.5rem;
    }

    .description {
      font-size: 1rem;
      line-height: 1.4rem;
    }

    .loading .image,
    .loading h4,
    .loading .description {
      background-color: var(--loading-grey);
      background: linear-gradient(100deg,
          rgba(255, 255, 255, 0) 40%,
          rgba(255, 255, 255, .5) 50%,
          rgba(255, 255, 255, 0) 60%) var(--loading-grey);
      background-size: 200% 100%;
      background-position-x: 180%;
      animation: 1s loading ease-in-out infinite;
    }


    .loading h4 {
      min-height: 1.6rem;
      border-radius: 4px;
      animation-delay: .05s;
    }

    .loading .description {
      min-height: 4rem;
      border-radius: 4px;
      animation-delay: .06s;
    }


    article {
      width: 500px;
      margin: 200px auto;
      padding: 21px;
      border: 2px solid #999;



    }


    .tight {
      letter-spacing: -.05em
    }

    .loose {
      letter-spacing: .5em
    }

    section {
      border: 1px blue solid;
      /* float: left; */
      width: 100%;
      /* margin: 0 0 10px 0; */
      /* 防止包含元素被超大内容撑大，多出的内容会被剪切，可靠地迫使父元素 */
      overflow: hidden;

    }

    p {
      font: 33px 'Zhi Mang Xing', cursive;
      ;
      /* font-size 
               font-family
               */
      /* left \right \centrer \justify 两端对齐 */
      font-display: none;
      text-align: center;
      float: left;

      margin: 0;
      background-color: #fff;
      /* color: #666; */
      /* border: 4px solid; */
      float: inherit;
    }

    image {

      /* overflow: hidden; */
      float: left;
    }

    footer {
      border: 1px solid red;
      clear: left;
    }





    .clear_me {
      clear: left;
    }

    .clearfix::after {

      /* 句号是最小内容 */
      content: ".";
      display: block;
      height: 0;
      visibility: hidden;
      /* 断开吸附 */
      clear: both;
    }
  </style>

  <link rel="preconnect" href="https://fonts.googleapis.com">
  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
  <link href="https://fonts.googleapis.com/css2?family=Zhi+Mang+Xing&display=swap" rel="stylesheet">

  <script type="text/javascript">
    const s2 = 90;
    if (1 == 1) {

      var s1 = "dd";
      let s = 10;//块级
      // let s = 11;//只能声明一次
    }

    //   s2 = 100;//在同一块内禁止被修改
    // alert(s1);
    // alert(s2);

    const person = {
      name: "jason",
      age: 20
    }

    //   (function (){
    //     var name = '';
    //     console.log(name);
    //   })();



  </script>
</head>

<body>
  <div id="d1">
    <b>In traditional typography, text is composed to create a readable, coherent, and visually satisfying whole that works invisibly, without the awareness of the reader.</p>
    <h3>Type for Every Use</h3>
    <p>The ubiquity of type has led typographers to coin the phrase "Type is everywhere".</p>
    


  </div>

  <!-- <div class="card loading">
        <div class="image">

        </div>
        <div class="content">
            <h4></h4>
            <div class="description">

            </div>
        </div>
    </div> -->
  <!-- </div> -->


  <div id="app"></div>
  <!-- <script src="src/main.js">

  </script> -->

 


  <p class="loose">Positive letter-spacing values increase the space between every character.</p>
  <p class="tight">Negative letter-spacing values bring the characters closer together.</p>
  <h1>Here is a regular headline</h1>
  <h1 class="tight">Here is a headline tightened</h1>


  <article>

 

    <div class="card">
      <div class="image">
        <img src="https://assets.codepen.io/2002878/wake-up-and-code.jpg" alt="">
      </div>
      <div class="content">
        <h4>CodingStartup</h4>
        <div class="description">
          Lorem ipsum dolor, sit amet consectetur adipisicing elit. Ex quasi enim facere commodi omnis...
        </div>
      </div>
    </div>


    <h1>CSS</h1>
    <p>Css stands</p>
    <h2>block-level elements</h2>
    <ul>
      <li><code>header</code></li>
      <li><code>section</code></li>
      <li><code>h1,h2</code></li>
    </ul>



    <h2>Inline Element</h2>
    <p>苟利国家生死以</p>
    <aside>
      <p>
        岂因祸福趋避之
      </p>
    </aside>


    <blockquote>
      <q>Typography</q>
      <cite>CWS</cite>

    </blockquote>


  </article>



</body>





<!-- <section 章节> -->
<section class="clearfix">
  <img src="images/fig1.png" alt="fig1" title="fig1" srcset="">

  <div class="clear_me"></div>
</section>

<section>



</section>
<footer>
  footer elements
</footer>

</html>